I've always found oats to be overrated PWO. Keep in mind this is just my opinion, and what works for me. They are very slow digesting, meaning they aren't going to replenish your glycogen stores very fast. Also if you actually look at the full macro breakdown, you aren't getting very many calories from carbs from them in the first place. 1/2 cup is going to give you 3.5 g of fat (which slows down digestion), which is already 30 something cals, then 4g of the 27g of carbs are fiber (which is also going to slow down the digestion), meaning they aren't going to your muscles either, so you are really only getting just over 20g of carbs, so just over half of those 150 cals in a 1/2 cup of oats is coming from carbs that are going to fill your glycogen stores back up and help you recover. I say use as many of your cals as you can PWO for food that is actually going to help you recover immediately.
When I do a solid food PWO, I do jasmine/white rice instead. 1/4 cup of rice is only 10-20 cals more than a 1/2 cup of oats, and all those cals are from carbs that will immediately be used to replenish muscle glycogen and help me recover. Then have a nice solid meal not too long afterwards of something obviously lower GI and slower digesting.
Just my two cents, if it works for you by all means you should continue to do it
