Once you have cooled down your system, take these preventive measures:
If you have landed on this page, you are likely staring at an error message, a sluggish viewport, or a mysterious CPU spike in Autodesk Revit 2022. You have seen the acronym RJAA floating around in log files, or you have heard the term "RJAA Hot" mentioned on forums.
Let’s be clear: "RJAA Hot" is not a standard Autodesk marketing term. It is a piece of community-generated jargon that usually refers to one of two critical scenarios involving Revit 2022 and a specific environment (often linked to Japanese infrastructure standards or a corrupted cache file). autodesk revit 2022 rjaa hot
In this 2,000+ word deep dive, we will break down:
Revit 2022 introduced a new "Regional Content Packs." If you ever installed the Japanese language pack or opened an RJAA-sourced template, Revit creates a cache folder at:
C:\ProgramData\Autodesk\RVT 2022\Regional\ja-JP\ Once you have cooled down your system, take
A bug in Revit 2022.1 causes this cache to balloon to 20GB+, and Revit continuously tries to index it. This indexing thread runs at high priority, driving your CPU temperature up by 15-20°C even when idle.
If you must keep the RJAA project:
By: BIM Technical Desk
Published: April 2026
While Autodesk Revit 2022 introduced powerful features like "Tag on Placement" and schedule enhancements, many users reported that their machines ran hot—both thermally and operationally—when dealing with large, complex models. If your workstation fans sound like a jet engine and the spinning cursor has become your nemesis, this guide is for you. Revit 2022 introduced a new "Regional Content Packs