To enable the fps limiter, right-click the Show Overclocking button and select Driver Profile Settings.. From here, find the Frame Rate Limiter listing under the Common subheading and choose an fps limit from the dropdown box. You may need to play around with the limit depending on the games being played and your monitor's refresh rate if you experience any screen tearing or other visual oddities.
Details. Though there is no cost to get into El Yunque National Forest (for hiking, etc.), there is a small entrance fee for El Portal Rain Forest Center. They charge $4/adult and $2/senior. Kids under 16 are free. They collect the entrance fee upon entry to the parking lot. Your National Park Service passes are valid here.
I'm posting this info of the crossing I just took as there is almost no info on the internet about it. Take a taxi from the Reynosa airport to downtown for $25US. Or for 8 pesos... From the Reynosa airport, walk 10 minutes to the main road (see Googlemaps). This is a very busy road with half a dozen lanes on each side. However, 30 seconds east of the airport road is a crossing WITH American-style crosswalk. Press the button, wait until the traffic light turns red and cross on your green!