Does turning off battery optimisation increase games performance?
Yes by quite a lot
Idk about game performance but after turning off , deplete your battery to 0% and charge it to 100% and you will notice a good enough increase in battery life
And losing a life cycle? He doesn't have to,but if he indeed has a problem he can try it
I haven't let it go below 0 yet,but perhaps I should I dunno my battery doesn't have a drain problem yet
I told 0% so that battery cycle gets completed once after turning off battery optimization and after that battery life is hoing to increase
You can be the best person to check it by yourself. I think you won't feel much difference as per my experience. ROG Phone 3 under default settings performs the best, you can fine tune using the Armory crate settings for further changes if you require.