My issue isn't with the con spam per say, it's with the indirect fire the soviets get - and the fact that early cons spam forces you to make weapons crews or at least play defensively, in which you have no offensive strike that can really knock out the mortars/rockets/onmaps because your luch's has been crippled and you're sort of forced to invest in some sort of defensive fortification.
I just played a game where my opponent lost 3 squads to not retreating, lost 3 tanks by driving them into my pak emplacement, lost a mortar to not retreating, and still almost won because he was able to sit with artillery and just blow stuff up from afar. It's the muta-ling of CoH2.
Soviet support weapons/squads do feel stronger this patch. Nobody has dealt with maxim spam yet I see. Even regular soviet mortars seem effective. I'm doing fine with Ostheer vs PPsH cons, but as OKW it's either rush for p4 and camp a fuel with volks into mg34, or go for double flak emplacements with luftwaffe/fortifications doc to hold off the con hordes until 120 arrives and then try to get obers or more support units to try and counter. Panzerfusilier spam is another alternative but is weaker since you don't have units that can actually counter support weapons effectively at range. ISG somewhat helps but it's mostly used for smoke spam to get past mgs or try and reach 120s, but it doesn't do enough dmg since it's easy to move and re-position soviet mortars. In terms of countering artillery you can try building your own howi or pick a doc that can drop arty to counter their arty. Simply send in a kubel or inf squad and go Feuersturm or Scavenge Doc and use the arty from those doctrines. I'd recommend building your own howi as it is cheaper and more effective, while also forcing the enemy to try and remove it first, instead of your own inf squads.