You turned the Elasticity on the text way down yes? It hits, does not bounce (much) and immediately sits on the surface and the Gravity keeps trying to drag it through – but the collision eps is reached or exceeded, lots of calculations (since the entire surface is in contact) so it bogs down. Even worse if you are using Full Collision rather than box for your text.
The fix is simple, in Solver Object/Details check off ‘Collision Use Rest Speed’ this stops the Gravity from dragging the text once it goes below a set speed (which you may need to adjust) so the text hits, can even bounce a bit, then stops.
You may want to up the Subsampling rate in the Solver Object/Main tab particularly if you lower the Collision eps.