Gp3 low performance

Volume restored from a snapshot has a very low slowness, it copies exactly 256 files and the copy process pauses for a minute and then continues with another 256. The disk has 402GB and had 3000iops at the beginning, it went up to 6000iops, despite the fact that it was the incident, but no performance improvement is seen, the Volume is mounted on a r5n.2xlarge in