I've mentioned Forging issues previously and received no reply. Forging works successfully, but each day the number of transactions doubles and the amount of stake halves for each transaction. The total amount of reward remains steady, but the fragmentation will surely lead to more blockchain issues if it continues indefinitely.
Yes, this also leads to the wallet being slower, and will make sending large amounts complicated as you'll exceed transaction size limits when gathering small inputs.
Ideally the staking should merge back outputs to keep things under control.