I think that raising the radius of C4 while still obeying LOS would be the best solution rather than upping the allowed raid time. To me, at least, 15 minutes feels like its a little too long and 10 minutes is decent. +1
Makeshift time bombs are baby C4's and should also obey LOS. If ya'll don't like the AOE, just throw it into the base and take out more props instead of only breaking a few by placing next to a wall. +1
I mean, AMD GPU's have greatly improved recently and having been using some sort of AMD card for last 6 years, i've never really had any issues with them. The RX 580 is a FANTASTIC newer budget GPU for only about $200.