10.20 release.
Note that for NTSYNC you need a new Linux kernel (6.14 or newer).
Run something through Wine (for example, winecfg) and, while it's running, execute If you have no How to know if NTSYNC works
lsof /dev/ntsync command. If you see your Wine process IDs there, then NTSYNC works and Wine uses it, otherwise it most likely does not work. An example of working NTSYNC:
$ lsof /dev/ntsync
lsof: WARNING: can't stat() tracefs file system /sys/kernel/debug/tracing
Output information may be incomplete.
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
start.exe 26395 user 7r CHR 10,119 0t0 1216 /dev/ntsync
wineserve 26397 user 9r CHR 10,119 0t0 1216 /dev/ntsync
services. 26401 user 14r CHR 10,119 0t0 1216 /dev/ntsync
explorer. 26407 user 8r CHR 10,119 0t0 1216 /dev/ntsync
winedevic 26441 user 8r CHR 10,119 0t0 1216 /dev/ntsync
svchost.e 26460 user 8r CHR 10,119 0t0 1216 /dev/ntsync
plugplay. 26465 user 8r CHR 10,119 0t0 1216 /dev/ntsync
winedevic 26486 user 8r CHR 10,119 0t0 1216 /dev/ntsync
conhost.e 26501 user 11r CHR 10,119 0t0 1216 /dev/ntsync
winecfg.e 26503 user 8r CHR 10,119 0t0 1216 /dev/ntsync
/dev/ntsync file at all, then your kernel either does not support NTSYNC or ntsync kernel module is not loaded, you can try to load it manually via modprobe command:
# modprobe ntsync
SHA256
4de1387cab694a146b66dffb7f6e3eae1c35509e9036f65a0836ae3302571dac wine-10.20-amd64.tar.xz
a162e73b1dfc3f5ce4c97f99b72c0ec8e53b6d26d025d52e17cd1172b3bb9606 wine-10.20-amd64-wow64.tar.xz
c4c1d06c1f72cfcff1d41a6b6097338eed84e74f1655d4fea56704fb38c9f30f wine-10.20-staging-amd64.tar.xz
11386cb12bdd1dd04b32409b08f4622e1bf376019e0f3ed4b9f383fc087e4a4c wine-10.20-staging-amd64-wow64.tar.xz
ced80f20e9901a534911cbb08a2d12108e393e02cf76703731df4d286ddf4c0f wine-10.20-staging-tkg-amd64.tar.xz
1be498d2e0f1916d0cbe7f208ec6efe4fe2edab7c43f08e8ef006b04568474d9 wine-10.20-staging-tkg-amd64-wow64.tar.xz
bfefee7a6136fb80a0459d5797aa52f4147556fa28fb7df6f641ddebd3a0041b wine-10.20-staging-tkg-x86.tar.xz
bc1125de1a8121a5d09a5abd192d374cc87ee8a8325f7dde60966f323bc93d8e wine-10.20-staging-x86.tar.xz
2250542d1b77dee04be2e362768e14e6a4f6e9421128b93e6608a5e26e9e38ad wine-10.20-x86.tar.xz