A method of reducing die lip build-up during profile extrusion of a thermoplastic article, comprising: extruding through a die a thermoplastic composition having a temperature of 220 to 240°C; and cooling the extruded composition to form an extruded thermoplastic article; wherein the thermoplastic composition comprises 56 to 62 weight percent of a poly(arylene ether), 16 to 22 weight percent of a homopolystyrene, 7 to 13 weight percent of a hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene, and 7 to 13 weight percent of a triaryl phosphate; wherein the thermoplastic composition comprises less than 1 weight percent of unhydrogenated poly(conjugated diene) rubber; wherein all weight percents are based on the total weight of the thermoplastic composition; wherein the thermoplastic composition exhibits an Izod notched impact strength at -30°C of at least 6 kilojoules/meter 2, as measured according to ISO 180 using notch configuration A, and a Vicat B value of at least 125°C, measured according to ISO 306, Method B120; wherein the extruding the thermoplastic composition produces an average die lip build-up per hour measured over the course of 8 continuous hours of extrusion of the thermoplastic composition, measured as described in the working examples; and wherein the average die lip build-up is less than that produced by a corresponding thermoplastic composition in which the hydrogenated block copolymer is replaced by an equal weight of an unhydrogenated block copolymer. extruding through a die a thermoplastic composition having a temperature of 220 to 240°C; and cooling the extruded composition to form an extruded thermoplastic article; wherein the thermoplastic composition comprises 56 to 62 weight percent of a poly(arylene ether), 16 to 22 weight percent of a homopolystyrene, 7 to 13 weight percent of a hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene, and 7 to 13 weight percent of a triaryl phosphate; 56 to 62 weight percent of a poly(arylene ether), 16 to 22 weight percent of a homopolystyrene, 7 to 13 weight percent of a hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene, and 7 to 13 weight percent of a triaryl phosphate; wherein the thermoplastic composition comprises less than 1 weight percent of unhydrogenated poly(conjugated diene) rubber; wherein all weight percents are based on the total weight of the thermoplastic composition; wherein the thermoplastic composition exhibits an Izod notched impact strength at -30°C of at least 6 kilojoules/meter 2, as measured according to ISO 180 using notch configuration A, and a Vicat B value of at least 125°C, measured according to ISO 306, Method B120; an Izod notched impact strength at -30°C of at least 6 kilojoules/meter 2, as measured according to ISO 180 using notch configuration A, and a Vicat B value of at least 125°C, measured according to ISO 306, Method B120; wherein the extruding the thermoplastic composition produces an average die lip build-up per hour measured over the course of 8 continuous hours of extrusion of the thermoplastic composition, measured as described in the working examples; and wherein the average die lip build-up is less than that produced by a corresponding thermoplastic composition in which the hydrogenated block copolymer is replaced by an equal weight of an unhydrogenated block copolymer.