They are impatient in the Mile High City for an NBA championship, which is the main reason the Denver Nuggets keep changing their playing cast despite success on the basketball court.

The latest experiment with the Nuggets concerns personalities. Can a team having the likes of David Thompson, George McGinnis, Charley Scott and Dan Issel get along while seeking a title?

So far this season, the Nuggets are getting mixed reviews. Entering tonight's 8:05 game against Washington at Capital Center, they have a 9-7 record and hints of internal problems.

Thompson's play has not been satisfying Coach Larry Brown. Thompson, who is being paid $800,000 a year, has been late for practices, has missed a bunch of crucial shots and doesn't seem all that happy with his new teammates.

McGinnis and Scott are accustomed to such things. Both are fighting reputations as malcontents and selfish individuals. They both say they are maligned, but, until this season, Thompson never had tangled with any teammates.

McGinnis has relished his short tenure in Denver, where he has been able to perform more like the player who once was a dominating star in ABA.

At Philadelphia, McGinnis was overshadowed by Julius Erving and haunted by his own faultering in the playoffs the last two seasons. Now he is rebounding and scoring at a quicker pace while taking on a bigger role as team leader.

Denver's most disturbing problem, however, may not be its lack of chemistry. The Nuggets' bench does not seem adequate to support it through the grind of the playoffs, especially when facing such deep teams as Seattle, Philadelphia and Washington.

The game against the Nuggets will end a grinding stretch for the Bullets, who will have played six games in nine days, including three on the road. Washington doesn't play again until Wednesday, when it meets the Celtics in Boston.