Mods are additional game packages that enhance or morph gameplay. Depending on the type of mod and the number of different mods you have installed gaming performance will be impacted to some extent. For example, the Skyrim Special Edition Upscaled Textures (SSEUT) mod is over 6GB and if you don’t have a powerful core or GPU to lean on such mods can significantly affect your gaming performance. Mods can also result in glitches or crashes. So it’s better to be selective while installing mods.