My advice would be this - he just invested 340 manpower and 100 munitions into an AT squad. Invest the same into infantry counters - flame, riflenades, bars. It's only 4 man squad and when focus fired will die/retreat quickly. With light vehicles just don't get too greedy and keep it far. You can absorb a volley and go back for crew repairs. Use it a lot. You have to depleat their health a bit and back off. The next unit or the same after repairs shooting at them will either kill them or make them retreat. you should be generally happy if you see this strat as it is extremely risky for ost. Lucky packhowie shot, grenade or just infantry focused fire may easily kill shrecked pzgren and it's gg.
i did go weapon upgrade before, but it's kind difficult to manipulate the range. the enemy don't push with panzerschreck pg. they use two mg(one covering the other), and put the latter mg to the front slowing push forward, which make me have no chance catch the mg while the mg is moving.
furthermore, once i use light vehicle to push back the mg, the pg shows up and stay in the mg suppresion area. mg has 45 range but mainline infenty has 35. as long as pg don't rush out i can't do anything to them.
and i can't break mgs one covering the other.
i did notice that this mg strat can only defent a small area, i can always have all the other terrrtory.
but it's so passive that i can only avoid the fight.
i believe i miss something here, so it would be great that you guys point it out.