I haven't found how to count in-game time with WSplit. Is focusing on the played gametick allowed without starting or stopping?

Use CBenni's timer, which can be downloaded here: https://mega.nz/#!PgRA0DoD!FY1PWCS7EHLtPmASh_7KyOVQpLVPXeWkn-zcGYAekxU

CBenni's timer also base on Net Framework , so also unusable

Well then I can't help you. Windows XP is over 15 years old, what do you expect? Did you try updating your net framework?

too new framework just refuse to work. Use xp for tas run(hourglass, although now less)