Penal start is a slow one for the soviets. Nominally, the quick start would be to build some conscripts before your first tech. That way you get the early advantage, but you need to remember that as the game progresses volks will overpower your troops.
That is why penal spam is still the most common build, even though it gives you early disadvantage. You just have to deal with that as a distadvantage of that particular build. If you don't want to change the build, which is understandable, you just need to play conservatively till you get the units you want out. Your okw opponent might get more land in the beginning, but you will be able to retake it as soon as your M3 and penal squads hit the field.
Thank you for the feedback. I guess it makes sense that Penals is a slow start for Soviets.