To ease the burden, Blizzard rolled back D2R Items the Friday update, but the measure proved inadequate--an even bigger increase in traffic led to another issue on Sunday.

The situation turned sour on Monday. Blizzard fixed the Diablo 2's backup database and then tried to make the switch.

Once the switch was completed this database continued to perform its backup processes rather than handling clients on remote servers.

This issue was rectified on Tuesday, but a record-breaking number of concurrent players same day resulted in further "degraded performance of the database," which database engineers are still working to correct.

The situation is dire enough that the Diablo 2: Resurrected team has roped in engineers from other departments of Blizzard to aid in resolving smaller issues, while they focus upon "core server issues." "We reached out to our third-party partners for help as well," PezRadar said.

Perhaps Blizzard's desire to maintain the authenticity of the Diablo 2 experience in the remake is the main cause of these issues.

One "legacy service" in particular handles critical functions including "game creation/joining, updating/reading/filtering game lists, verifying game server health, and reading characters from buy D2R Ladder Items the database."