I've tested it on my HP ProBook 450 G3 with the snapshot from July 30. In xorg.conf I've put the block you've proposed, there is nothing else in it.
Cursor moves: OK Tapping: OK one finger = left click, two fingers = right click Swapsides: not OK, scroll bar moves the same way my fingers move on the touchpad, no matter what the setting is Scaling/Speed: OK Thank you very much for your work! # wsconsctl | grep mouse mouse.type=synaptics mouse.rawmode=0 mouse.scale=1472,5716,1408,4886,0,46,80 mouse.tp.tapping=1 mouse.tp.scaling=0.167 mouse.tp.swapsides=0 mouse.tp.disable=0 OpenBSD 6.1-current (GENERIC.MP) #21: Sun Jul 30 09:58:05 MDT 2017 dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 17055059968 (16264MB) avail mem = 16531820544 (15765MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.7 @ 0xd9a23000 (34 entries) bios0: vendor HP version "N78 Ver. 01.14" date 08/08/2016 bios0: HP HP ProBook 450 G3 acpi0 at bios0: rev 2 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP SSDT SSDT TCPA SSDT UEFI SSDT SSDT MSDM SLIC HPET APIC MCFG SSDT SSDT SSDT SSDT SSDT NHLT FPDT BGRT SSDT acpi0: wakeup devices PEGP(S4) PEG1(S4) PEGP(S4) PEG2(S4) PEGP(S4) PEG0(S4) GLAN(S4) XHC_(S3) XDCI(S4) HDAS(S4) PXSX(S4) RP01(S4) PXSX(S4) RP02(S4) PXSX(S4) RP03(S4) [...] acpitimer0 at acpi0: 3579545 Hz, 24 bits acpihpet0 at acpi0: 23999999 Hz acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz, 2400.00 MHz cpu0: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,SENSOR,ARAT cpu0: 256KB 64b/line 8-way L2 cache cpu0: TSC frequency 2400000000 Hz cpu0: smt 0, core 0, package 0 mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges cpu0: apic clock running at 23MHz cpu0: mwait min=64, max=64, C-substates=0.2.1.2.4.1.1.1, IBE cpu1 at mainbus0: apid 2 (application processor) cpu1: Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz, 2400.00 MHz cpu1: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,SENSOR,ARAT cpu1: 256KB 64b/line 8-way L2 cache cpu1: smt 0, core 1, package 0 cpu2 at mainbus0: apid 1 (application processor) cpu2: Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz, 2400.00 MHz cpu2: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,SENSOR,ARAT cpu2: 256KB 64b/line 8-way L2 cache cpu2: smt 1, core 0, package 0 cpu3 at mainbus0: apid 3 (application processor) cpu3: Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz, 2400.00 MHz cpu3: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,SENSOR,ARAT cpu3: 256KB 64b/line 8-way L2 cache cpu3: smt 1, core 1, package 0 ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 120 pins acpimcfg0 at acpi0 addr 0xf8000000, bus 0-63 acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus -1 (PEG1) acpiprt2 at acpi0: bus -1 (PEG2) acpiprt3 at acpi0: bus -1 (PEG0) acpiprt4 at acpi0: bus -1 (RP01) acpiprt5 at acpi0: bus -1 (RP02) acpiprt6 at acpi0: bus -1 (RP03) acpiprt7 at acpi0: bus -1 (RP04) acpiprt8 at acpi0: bus 1 (RP05) acpiprt9 at acpi0: bus 2 (RP06) acpiprt10 at acpi0: bus -1 (RP07) acpiprt11 at acpi0: bus -1 (RP08) acpiprt12 at acpi0: bus 3 (RP09) acpiprt13 at acpi0: bus -1 (RP10) acpiprt14 at acpi0: bus -1 (RP11) acpiprt15 at acpi0: bus -1 (RP12) acpiprt16 at acpi0: bus -1 (RP13) acpiprt17 at acpi0: bus -1 (RP14) acpiprt18 at acpi0: bus -1 (RP15) acpiprt19 at acpi0: bus -1 (RP16) acpiprt20 at acpi0: bus -1 (RP17) acpiprt21 at acpi0: bus -1 (RP18) acpiprt22 at acpi0: bus -1 (RP19) acpiprt23 at acpi0: bus -1 (RP20) acpiec0 at acpi0 acpicpu0 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS acpicpu1 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS acpicpu2 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS acpicpu3 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS acpipwrres0 at acpi0: PG01, resource for PEG1 acpipwrres1 at acpi0: PG02, resource for PEG2 acpipwrres2 at acpi0: PG00, resource for PEG0 acpipwrres3 at acpi0: WRST acpipwrres4 at acpi0: WRST acpipwrres5 at acpi0: WRST acpipwrres6 at acpi0: WRST acpipwrres7 at acpi0: WRST acpipwrres8 at acpi0: WRST acpipwrres9 at acpi0: WRST acpipwrres10 at acpi0: WRST acpipwrres11 at acpi0: WRST acpipwrres12 at acpi0: PXP_ acpipwrres13 at acpi0: WRST acpipwrres14 at acpi0: WRST acpipwrres15 at acpi0: WRST acpipwrres16 at acpi0: WRST acpipwrres17 at acpi0: WRST acpipwrres18 at acpi0: WRST acpipwrres19 at acpi0: WRST acpipwrres20 at acpi0: WRST acpipwrres21 at acpi0: WRST acpipwrres22 at acpi0: WRST acpipwrres23 at acpi0: WRST acpipwrres24 at acpi0: P1PR acpitz0 at acpi0: critical temperature is 128 degC acpitz1 at acpi0: critical temperature is 128 degC acpitz2 at acpi0: critical temperature is 128 degC acpitz3 at acpi0: critical temperature is 128 degC acpitz4 at acpi0: critical temperature is 128 degC acpitz5 at acpi0: critical temperature is 128 degC acpitz6 at acpi0: critical temperature is 128 degC acpitz7 at acpi0: critical temperature is 128 degC "PNP0C14" at acpi0 not configured "PNP0C14" at acpi0 not configured "HPQ6007" at acpi0 not configured "INT3F0D" at acpi0 not configured "HPQ8002" at acpi0 not configured "SYN302B" at acpi0 not configured acpibat0 at acpi0: BAT0 model "Primary" serial 13057 2015/10/23 type LIon oem "Hewlett-Packard" acpiac0 at acpi0: AC unit offline acpibtn0 at acpi0: SLPB acpibtn1 at acpi0: LID_ "PNP0C14" at acpi0 not configured "HPQ6001" at acpi0 not configured "INT33A1" at acpi0 not configured tpm0 at acpi0: TPM_ addr 0xfed40000/0x5000: device 0x001b15d1 rev 0x10 "INT3394" at acpi0 not configured "INT340E" at acpi0 not configured acpivideo0 at acpi0: GFX0 acpivout0 at acpivideo0: DD1F cpu0: Enhanced SpeedStep 2400 MHz: speeds: 2301, 2300, 2200, 2100, 2000, 1800, 1700, 1500, 1400, 1300, 1100, 1000, 800, 700, 500, 400 MHz pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "Intel Core 6G Host" rev 0x08 inteldrm0 at pci0 dev 2 function 0 "Intel HD Graphics 520" rev 0x07 drm0 at inteldrm0 inteldrm0: msi error: [drm:pid0:i915_firmware_load_error_print] *ERROR* failed to load firmware i915/skl_dmc_ver1.bin (-22) error: [drm:pid0:i915_gem_init_hw] *ERROR* Failed to initialize GuC, error -8 (ignored) inteldrm0: 1920x1080, 32bpp wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation) wsdisplay0: screen 1-5 added (std, vt100 emulation) xhci0 at pci0 dev 20 function 0 "Intel 100 Series xHCI" rev 0x21: msi usb0 at xhci0: USB revision 3.0 uhub0 at usb0 configuration 1 interface 0 "Intel xHCI root hub" rev 3.00/1.00 addr 1 pchtemp0 at pci0 dev 20 function 2 "Intel 100 Series Thermal" rev 0x21 "Intel 100 Series MEI" rev 0x21 at pci0 dev 22 function 0 not configured ahci0 at pci0 dev 23 function 0 "Intel 100 Series AHCI" rev 0x21: msi, AHCI 1.3.1 ahci0: port 0: 6.0Gb/s ahci0: port 1: 1.5Gb/s ahci0: port 2: 6.0Gb/s scsibus1 at ahci0: 32 targets sd0 at scsibus1 targ 0 lun 0: <ATA, SanDisk Ultra II, X411> SCSI3 0/direct fixed naa.5001b448b4492cfa sd0: 915715MB, 512 bytes/sector, 1875385008 sectors, thin cd0 at scsibus1 targ 1 lun 0: <hp, DVDRW SU208HB, HH00> ATAPI 5/cdrom removable sd1 at scsibus1 targ 2 lun 0: <ATA, SanDisk SD7SN6S-, X351> SCSI3 0/direct fixed naa.5001b44f183171bd sd1: 244198MB, 512 bytes/sector, 500118192 sectors, thin ppb0 at pci0 dev 28 function 0 "Intel 100 Series PCIE" rev 0xf1: msi pci1 at ppb0 bus 1 re0 at pci1 dev 0 function 0 "Realtek 8168" rev 0x15: RTL8168H/8111H (0x5400), msi, address dc:4a:3e:f0:7f:b9 rgephy0 at re0 phy 7: RTL8251 PHY, rev. 0 ppb1 at pci0 dev 28 function 5 "Intel 100 Series PCIE" rev 0xf1: msi pci2 at ppb1 bus 2 iwm0 at pci2 dev 0 function 0 "Intel Dual Band Wireless AC 3165" rev 0x81, msi ppb2 at pci0 dev 29 function 0 "Intel 100 Series PCIE" rev 0xf1: msi pci3 at ppb2 bus 3 rtsx0 at pci3 dev 0 function 0 "Realtek RTS522A Card Reader" rev 0x01: msi sdmmc0 at rtsx0: 4-bit pcib0 at pci0 dev 31 function 0 "Intel 100 Series LPC" rev 0x21 "Intel 100 Series PMC" rev 0x21 at pci0 dev 31 function 2 not configured azalia0 at pci0 dev 31 function 3 "Intel 100 Series HD Audio" rev 0x21: msi azalia0: codecs: Conexant/0x50f4, Intel/0x2809, using Conexant/0x50f4 audio0 at azalia0 ichiic0 at pci0 dev 31 function 4 "Intel 100 Series SMBus" rev 0x21: apic 2 int 16 iic0 at ichiic0 spdmem0 at iic0 addr 0x50: 8GB DDR3 SDRAM PC3-12800 SO-DIMM spdmem1 at iic0 addr 0x52: 8GB DDR3 SDRAM PC3-12800 SO-DIMM isa0 at pcib0 isadma0 at isa0 pckbc0 at isa0 port 0x60/5 irq 1 irq 12 pckbd0 at pckbc0 (kbd slot) wskbd0 at pckbd0: console keyboard, using wsdisplay0 pms0 at pckbc0 (aux slot) wsmouse0 at pms0 mux 0 pms0: Synaptics touchpad, firmware 7.5, 0x1e0b1 0x640000 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 vmm0 at mainbus0: VMX/EPT uvideo0 at uhub0 port 6 configuration 1 interface 0 "SunplusIT Inc HP HD Camera" rev 2.00/98.85 addr 2 video0 at uvideo0 ugen0 at uhub0 port 7 "Intel Bluetooth" rev 2.00/0.01 addr 3 ugen1 at uhub0 port 8 "Validity Sensors product 0x003f" rev 1.10/1.04 addr 4 vscsi0 at root scsibus2 at vscsi0: 256 targets softraid0 at root scsibus3 at softraid0: 256 targets root on sd0a (5aef297e0d2e2ac0.a) swap on sd0b dump on sd0b iwm0: hw rev 0x210, fw ver 16.242414.0, address 08:d4:0c:9a:21:bc