The game opens with a white screen and then stops responding after a while since 0.0.17.

Experiencing the same issue on both GDlauncher and CurseForge with different RAM (8GB and 12GB) and Java version (16 and 17) settings.

On rare occasions it works fine if I remove some of the mods (usually balm and waystones in my case) and then put them back in and restart after a successful launch.

Here are the logs I get:
latest.log
debug.log

The fix was added to the pack.

So, I've been tracking down a similar issue.
I've got a Ryzen 5800X (16 threads), and it looks like there's a deadlock between FML (Forge Mod Loader - yes, we know), and SilentGear.

I've tracked it down to the code in their Repo:

• SilentChaos512/Silent-Gear#438 (comment)

My friend with an Intel (12 threads) is fine

same here i9 9900k 8 core 16 threads.

if I restart it a few times it works.

Take a look at the issue linked by Anoyomouse, there's an easy workaround for the time being.