if you are very tight, it may take a lot of time to work out the tightness.  only limit yourself to 2 minutes if you’re doing longer, try other tools that are harder than a foam roller but just as wide to spread the load for now.  things like the big battlestar, or the alpha ball.  once you work some of the tightness out across many days, graduate to smaller or harder tools, like small battlestar and supernova.

it is also possible that the hardness of the tool you’re using, like the prongs of the rumble roller may be preventing you from relaxing into it because you are too tight. another reason to start with less pressure, and work up to more focused pressure which is to let your body and brain learn how to relax with the given pressure.