This ^^^ We answered about the same exact timeMost likely improperly sharpened chain. Check for consistent angles and tooth length on both sides of your chain. Pick up a new chain and give it a go while you are having the used one professionally sharpened. It never hurts to have extra chains, especially when cutting remotely and/or in very dirty conditions.
If a new chain doesn’t correct the situation then look to your bar for excess wear or pinched or folded channel. Flip your bar over and see if the cuts improve. Flipping your bar periodically is good practice anyway to avoid uneven wear and tear.