Performance
DynDOLOD is a set of tools that generates a LOD mod based on the load order and the options/settings made by the user. The visual results and the performance impact are what the user chooses it to be. Based on the settings and user choices, the resource requirements and performance impact can be less, same or more than the LOD of the vanilla game while the visual result is always vastly superior.
Certain INI settings can affect performance much worse then LOD ever could.
There are 3 presets: Low - almost none. Medium - like SkyFalls + SDO but 1000x better visuals. High - certainly yes. RTFM to adjust every detail yourself.
The generated object LOD is typically better optimized than vanilla LOD. If the game can show vanilla LOD, it can also show updated and better optimized LOD. Be wary about 3rd party LOD models. Especially 3D tree LOD models or simply renamed full models.
Generating properly working occlusion data for all worldspaces with LOD reduces the performance requirements.
Drastically improved distance views with optional 3D tree LOD and grass LOD of course require more performance.
Be wary about non or poorly optimized 3rd party models being used for LOD because of assets or mesh mask rules included in mods. They can also cause long generation times.
Make sure performance is as desired before generating LOD and use a sensical load order and preset and settings, also in the game. Done correctly, the LOD patch can even require less performance.
Virus?
3rd party download services like Nexus automatically scan every upload. Look for the green/blue circle checkmark for each file on the files tab.
Check the individual executable files in the download archive with https://www.virustotal.com to rule out false positives. A false positive is when the majority of tests do not find anything wrong.
Report the problem to the developers of the anti virus software. Add an exception for the false positive. Use better antivirus software.
Older versions?
Older versions are outdated, gone and should not be used anymore. Especially when they are several months old.
Wanting to use older versions for any reason defies common sense - especially when voluntarily participating in an alpha or beta test with the requirement to provide feedback and to report problems for the current version - and the cathedral modding concept - which works both ways. Insisting to use older versions means proper modding practice and how to use and support free tools that are under constant development to fix bugs and to support new and updated mods is not understood.
Always use the latest version available. Do not use or bother to ask for outdated versions. See Updating how to update to the latest version, keeping settings etc.
Newer versions fix bugs, contain updated/new assets and configuration files for the vanilla game and for existing, new or updated mods. See the Changelog.
Tools, configurations, resources and the documentation are regularly updated to address bugs, issues and better support the vanilla game and existing, new or updated mods and based on user feedback.
If a third party tool or guide requires an older version, the tool or guide is outdated. Contact its author for help or a fix for the issues with the tools/guides.
Troubleshoot or research errors and fix their cause if possible. In case of questions, problems or bugs ask or report them to the official DynDOLOD support forum so any issues can be solved or fixed for the current version and for all users regardless of their source.
The sane and proper modding and development method is to report bugs or problems, have them fixed in a new version or solved in the official DynDOLOD support forum.
BSOD - Blue Screen Of Death
BSOD are a hardware, BIOS setting, OS or driver problem.
For example, problems with overclocking, memory timings, cooling, unstable power supply etc.
Searching the Internet for the BSOD code should help troubleshooting.