Does riding a mount influence resources detection ability?

In World of Warcraft Classic/Retail, when riding a mount, does it make any changes to time and/or distance a resource (herb, ore, etc.) is being shown on mini map?

If any, it may be in-game (ex. higher speed affects effective range of detection) or out of game (ex. higher speed means less updates per traveled distance which may display resource later than usual.)

Solution 1:

Your second guess is correct.

Once you are in range, your client will take a little bit of time to register that there is a resource nearby.

So, if you are travelling faster, resources often appear near (because by the time it is loaded, you have reached them) or not at all (because by the time it is loaded, you went back out of range).