How to fix lumen flickering issue without anti aliasing?

I’m trying to make lumen work with my artstyle but the solutions I’ve searched to fix the lumen flickering are with using TSR anti aliasing. Unfortunately anti aliasing doesn’t work with my pixelated artstyle. (I’m using Pixel Tools by Turbomorsh and substrate toon shader in 5.8)

I’ve been researching this for the past 2 days trying to make lumen not have artifacts or looking for alternatives. I tried baked lighting but for some unholy reason it keeps getting stuck at 0% and crashing. (Tried troubleshooting but no solution that worked came up)

Now I’m back to trying to find a solution for lumen, adjusting quality settings and googling and asking AI. I desperately need lighting expert guidance right now.