I have a Trek Marlin 5 (2022) MTB with Shimano Altus M315 as the front derailleur. The problem is the chain (KMC Z8.3) is rubbing the derailleur on higher gears (for example, when using 2x7 or 2x8) with the highest being 2x8. I understand that on higher gears it is expected to have some rubbing as the chain is a bit crossed but the noise is too much at this point.
Given this is not an uncommon problem, I tried to move the "H" indexing screw counter-clock-wise to move it outward following some suggestions but the problem is still there. I have tried to look for other causes/solutions but my limited knowledge in this area is failing me.
Here's a picture:
Please let me know what can I do to fix this or make it bearable at least. Also, please let me know if you need any more info.