Using Proton 8+ with GTX 1xxx series GPUs

There is a problem with GTX 1xxx cards (1660Ti in my case) running Proton 8+ for quite some time due to Nvidia driver, they're unusable. Because of this even Experimental and GE branches are useless for me.

To be fair, Proton 7 is mostly enough. However, I cannot play one of my games after its update and it's working fine with Proton 8 according to other people.

So, is there a workaround for this or I should wait for Nvidia's Vulkan updates?