I changed out a faucet several days ago. The hot water side of the new faucet runs very slowly, as compared to the old faucet. The cold water side is fine. The new faucet is a Glacier Bay which uses cartridges to regulate water output. Suspecting the cartridge to be defective, Glacier Bay sent me a new cartridge. After installing the new cartridge, the water output is exactly the same. I've checked the hot water service to the faucet and everything seems to be fine.
Before I remove the faucet to check for an obstruction between the cartridge and the spout (unlikely?), I thought that I'd post this to see whether anyone has had experience with this type of problem.
Shut the water off to the hot side, disconnect it from under the faucet. Set a bucket under the sink and turn the water back on to check water flow.
The faucet you bought is the lowest of the lower priced faucets. I've seen lots of people on other DIY sites have the same problum with that brand.
I tryed using them in a rental and had to replace all of them because of leaks and the finish failing within a few years.