Up to three Movement System Upgrades can be installed in each inventory tab of the Exosuit which can accept Technology --- installing four or more upgrades of the same category in a given inventory tab will disable all upgrades of that type on that tab until the upgrade count is reduced to three or less on that tab.
Movement System Upgrades can only be obtained from opening Movement Modules.
Upgrade modules follow a static progression. The generation seed is used for all module families at the same time. During module installations it goes up by one. The new module they change into correlates to their order of installation. If the game is reloaded, the exact same pool will be offered to the player, no matter the order they install other modules.
Example: If an S-class module had 200 ly Hyperdrive Range bonus on the third installation no matter in what order the former modules are installed or their class, if the same S-class module is used third again, it will once again be the 200 ly bonus module even if the name changes. Only if used second or fourth the module stat may change.
Discovered Upgrade Modules
ID value can be established by using NMSSaveEditor, and this is the "seed" that determines what bonuses this upgrade will provide.
NB. Neural Stimulator is a "Movement Upgrade", and not a "Movement System" upgrade, hence it follows different rules (including different bonus structure and not counting towards 3 "Movement System" upgrades per tab - this one can be 4th).